Date: Mon, 30 Sep 2002 17:40:06 +0200 (CEST)
From: Sebastian Krahmer <[email protected]>
To: [email protected]Subject: SuSE Security Announcement: heimdal (SuSE-SA:2002:034)
-----BEGIN PGP SIGNED MESSAGE-----
______________________________________________________________________________
SuSE Security Announcement
Package: heimdal
Announcement-ID: SuSE-SA:2002:034
Date: Mon Sep 30 17:00:00 CEST 2002
Affected products: SuSE Linux 7.2, 7.3, 8.0,
SuSE eMail Server,
SuSE Linux Connectivity Server,
SuSE Linux Enterprise Server 7,
SuSE Linux Office Server
Vulnerability Type: remote command execution
Severity (1-10): 8
SuSE default package: Yes
Cross References: http://www.pdc.kth.se/heimdal
Content of this advisory:
1) security vulnerability resolved: Various overflows in heimdal.
problem description, discussion, solution and upgrade information
2) pending vulnerabilities, solutions, workarounds:
- ghostview/kghostview
- fetchmail
3) standard appendix (further information)
______________________________________________________________________________
1) problem description, brief discussion, solution, upgrade information
The Heimdal package is a free Kerberos implementation offering flexible
authentication mechanisms based on the Kerberos 5 and Kerberos 4 scheme.
The SuSE Security Team has reviewed critical parts of the Heimdal
package such as the kadmind and kdc server. While doing so several
possible buffer overflows and other bugs have been uncovered and fixed.
Remote attackers can probably gain remote root access on unpatched systems.
Since these services run usually on authentication servers we consider
these bugs to be very serious. An update is strongly recommended if you are
using the Heimdal package.
Please download the update package for your distribution and verify its
integrity by the methods listed in section 3) of this announcement.
Then, install the package using the command "rpm -Fhv file.rpm" to apply
the update.
Our maintenance customers are being notified individually. The packages
are being offered to install from the maintenance web.
To be sure the update takes effect you have to restart the services which
belong to the heimdal package. As root execute the command
/etc/rc.d/kdc restart
If you are running other Kerberos based services such as hpropd make sure
you also restart them as well.
i386 Intel Platform:
SuSE-8.0
ftp://ftp.suse.com/pub/suse/i386/update/8.0/d4/heimdal-devel-0.4e-191.i386.rpm
9dcb318864c2ad7c8bb11a51b0c1e12a
ftp://ftp.suse.com/pub/suse/i386/update/8.0/sec1/heimdal-lib-0.4e-191.i386.rpm
7971b5a482b0f8521c0a8bd07182be36
ftp://ftp.suse.com/pub/suse/i386/update/8.0/sec3/heimdal-0.4e-191.i386.rpm
fb6792204a9ec58f69a9dc7b4bcbed59
source rpm:
ftp://ftp.suse.com/pub/suse/i386/update/8.0/zq1/heimdal-0.4e-191.src.rpm
976383f4b7eeabcfc48ab4360a14586f
SuSE-7.3
ftp://ftp.suse.com/pub/suse/i386/update/7.3/sec2/heimdal-0.4d-132.i386.rpm
d2f174640a8d3b976eef3ff3afb642ee
ftp://ftp.suse.com/pub/suse/i386/update/7.3/sec2/heimdal-devel-0.4d-132.i386.rpm
fad86035d9b94aa50a9225c9e40618da
source rpm:
ftp://ftp.suse.com/pub/suse/i386/update/7.3/zq1/heimdal-0.4d-132.src.rpm
5d3afb07af86563e5eff5f0fad6113d4
SuSE-7.2
ftp://ftp.suse.com/pub/suse/i386/update/7.2/sec1/heimdal-lib-0.3e-83.i386.rpm
7a5f3f3e1c16481b6dea589bedd7ee44
ftp://ftp.suse.com/pub/suse/i386/update/7.2/sec2/heimdal-0.3e-83.i386.rpm
f94d2a88a2100b2b28496b1a8f3030c4
ftp://ftp.suse.com/pub/suse/i386/update/7.2/sec2/heimdal-devel-0.3e-83.i386.rpm
d4fa5f75cb1d422fe439a276fdfe8aca
source rpm:
ftp://ftp.suse.com/pub/suse/i386/update/7.2/zq1/heimdal-0.3e-83.src.rpm
a42a3535e0bd5966eb8b9d017213dfb5
Sparc Platform:
SuSE-7.3
ftp://ftp.suse.com/pub/suse/sparc/update/7.3/sec1/heimdal-lib-0.4d-67.sparc.rpm
c50802492db0e8728d666f3b38b7ca5e
ftp://ftp.suse.com/pub/suse/sparc/update/7.3/sec2/heimdal-0.4d-67.sparc.rpm
595d21ca05b8c886c0887189bb76487d
ftp://ftp.suse.com/pub/suse/sparc/update/7.3/sec2/heimdal-devel-0.4d-67.sparc.rpm
1dfe9d49c83303ddf3490497dffce7fa
source rpm:
ftp://ftp.suse.com/pub/suse/sparc/update/7.3/zq1/heimdal-0.4d-67.src.rpm
7c61896ca257f79656e35bc59e1de734
PPC Power PC Platform:
SuSE-7.3
ftp://ftp.suse.com/pub/suse/ppc/update/7.3/sec1/heimdal-lib-0.4d-113.ppc.rpm
e905e8c468b9eddef6b8a785d5241914
ftp://ftp.suse.com/pub/suse/ppc/update/7.3/sec2/heimdal-0.4d-113.ppc.rpm
7b816aa786118e481be811be6974177f
ftp://ftp.suse.com/pub/suse/ppc/update/7.3/sec2/heimdal-devel-0.4d-113.ppc.rpm
100f9fbe35d82dcf02aed98aa70103b8
source rpm:
ftp://ftp.suse.com/pub/suse/ppc/update/7.3/zq1/heimdal-0.4d-113.src.rpm
24467d712a359516ae60462c56dc97df
______________________________________________________________________________
2) Pending vulnerabilities in SuSE Distributions and Workarounds:
- ghostview/kghostview
Bufferoverflows have recently been discovered in these packages. They allow
attackers to execute arbitrary code with the privileges of the user
viewing special crafted documents created by the attacker. New packgaes will
soon be available on our ftp servers.
- fetchmail
Fetchmail contains remotely exploitable overflows in the mail header
parsing functions. In depth discussion of these problems can be found at
http://security.e-matters.de/advisories/032002.html.
New packages will soon be available on our ftp servers.
______________________________________________________________________________
3) standard appendix: authenticity verification, additional information
- Package authenticity verification:
SuSE update packages are available on many mirror ftp servers all over
the world. While this service is being considered valuable and important
to the free and open source software community, many users wish to be
sure about the origin of the package and its content before installing
the package. There are two verification methods that can be used
independently from each other to prove the authenticity of a downloaded
file or rpm package:
1) md5sums as provided in the (cryptographically signed) announcement.
2) using the internal gpg signatures of the rpm package.
1) execute the command
md5sum <name-of-the-file.rpm>
after you downloaded the file from a SuSE ftp server or its mirrors.
Then, compare the resulting md5sum with the one that is listed in the
announcement. Since the announcement containing the checksums is
cryptographically signed (usually using the key [email protected]),
the checksums show proof of the authenticity of the package.
We disrecommend to subscribe to security lists which cause the
email message containing the announcement to be modified so that
the signature does not match after transport through the mailing
list software.
Downsides: You must be able to verify the authenticity of the
announcement in the first place. If RPM packages are being rebuilt
and a new version of a package is published on the ftp server, all
md5 sums for the files are useless.
2) rpm package signatures provide an easy way to verify the authenticity
of an rpm package. Use the command
rpm -v --checksig <file.rpm>
to verify the signature of the package, where <file.rpm> is the
filename of the rpm package that you have downloaded. Of course,
package authenticity verification can only target an un-installed rpm
package file.
Prerequisites:
a) gpg is installed
b) The package is signed using a certain key. The public part of this
key must be installed by the gpg program in the directory
~/.gnupg/ under the user's home directory who performs the
signature verification (usually root). You can import the key
that is used by SuSE in rpm packages for SuSE Linux by saving
this announcement to a file ("announcement.txt") and
running the command (do "su -" to be root):
gpg --batch; gpg < announcement.txt | gpg --import
SuSE Linux distributions version 7.1 and thereafter install the
key "[email protected]" upon installation or upgrade, provided that
the package gpg is installed. The file containing the public key
is placed at the top-level directory of the first CD (pubring.gpg)
and at ftp://ftp.suse.com/pub/suse/pubring.gpg-build.suse.de .
- SuSE runs two security mailing lists to which any interested party may
subscribe:
[email protected]
- general/linux/SuSE security discussion.
All SuSE security announcements are sent to this list.
To subscribe, send an email to
<[email protected]>.
[email protected]
- SuSE's announce-only mailing list.
Only SuSE's security announcements are sent to this list.
To subscribe, send an email to
<[email protected]>.
For general information or the frequently asked questions (faq)
send mail to:
<[email protected]> or
<[email protected]> respectively.
SuSE's security contact is <[email protected]> or <[email protected]>.
The <[email protected]> public key is listed below.
______________________________________________________________________________
The information in this advisory may be distributed or reproduced,
provided that the advisory is not modified in any way. In particular,
it is desired that the clear-text signature shows proof of the
authenticity of the text.
SuSE Linux AG makes no warranties of any kind whatsoever with respect
to the information contained in this security advisory.
Type Bits/KeyID Date User ID
pub 2048R/3D25D3D9 1999-03-06 SuSE Security Team <[email protected]>
pub 1024D/9C800ACA 2000-10-19 SuSE Package Signing Key <[email protected]>
- -----BEGIN PGP PUBLIC KEY BLOCK-----
Version: GnuPG v1.0.6 (GNU/Linux)
Comment: For info see http://www.gnupg.org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=LRKC
- -----END PGP PUBLIC KEY BLOCK-----
-----BEGIN PGP SIGNATURE-----
Version: 2.6.3in
Charset: noconv
iQEVAwUBPZhp63ey5gA9JdPZAQGBSAf+PjBSNoZVnkySDmBABDYI3QFbezFDgZ7y
0cpd3jtDBDgr7nyki2H3kUIpk0TW8JqfKrq4psnwDS3minbrxy6iS08iC/CFDj1m
3n+pdGxrcSfGbiYQke4Pn7fiUwCyv2DVeLCoI/b0dik38JOMDNvXp0Rjv2/2uEZJ
itc3QV1ocxTx3Q064DAsU3Ll7W9THjGd47eRz6QVott01eBjlDZTaw9gtVvyN99T
ooQArj5yhoErRXTkc/V1ttz2MahmvxeB7ohxyMl/26UQ2BWVk71T4mqo1vWEmzv1
59+7cbnjUzIw4iq5G99xkWEVgSgaiFwc8q0BrcwE6KNPhmXAngEq6w==
=yeEG
-----END PGP SIGNATURE-----
--
~
~ perl self.pl
~ $_='print"\$_=\47$_\47;eval"';eval
~ [email protected] - SuSE Security Team
~
